Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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NPA: 712 [Rate centres in NPA 712] [Dial plan for NPA 712]

NXX: 897

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
712-897 A Avoca IA AVOCIAXOPS0  1170 WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 644      
712-897 7 Avoca IA BLLVNEBL5MD  9877 LEVEL 3 COMMUNICATIONS, LLC - IA 644   2023-03-11   
712-897 9 Avoca IA AVOCIAXOPS0  1170 WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 644   2018-08-20   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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